Genetics

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What are chromosomes?

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Chromosomes are structures within cells that contain DNA. They are made up of genes and are responsible for carrying genetic information.

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When are chromosomes found in their tightly packed threadlike form?

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Chromosomes are found in their tightly packed threadlike form when the cell is reproducing.

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How many mutations does the average person have in their DNA that didn't exist in either parent?

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The average person has about 60 mutations in their DNA that didn't exist in either their father or mother.

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How many chromosomes do we inherit from our parents?

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We inherit 23 chromosomes from our dad and 23 from our mom, totaling 46 chromosomes.

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What is a trait?

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A trait is a characteristic or feature of an organism, influenced by genetics, that can affect appearance, behavior, and abilities.

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What makes one person's DNA different from someone else's?

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The order of the bases (A, T, C, G) in the DNA strand makes one person's DNA different from someone else's.

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What is DNA?

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DNA (deoxyribonucleic acid) is the molecule that carries the genetic instructions for life.

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What are genes?

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Genes are segments of DNA that contain the instructions for building proteins, which determine traits.

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What is the role of mutations in genetics?

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Mutations are changes in the DNA sequence that can lead to variations in traits and can be inherited.

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What is the difference between dominant and recessive traits?

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Dominant traits are expressed when at least one dominant allele is present, while recessive traits are expressed only when two recessive alleles are present.